Brian Dunning's FileMaker Custom Functions

LastDayOfMonth ( theDate )

Returns the date of the last day of the specified month

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Darren Terry   Darren Terry
Pacific Data Management, Inc.
http://www.pdm-inc.com

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  Sample input:
LastDayOfMonth ( Date ( 7 , 5, 2006 ))
  Sample output:
7/31/2006

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

The last day of the specified month is the "0th" day of the next month. FileMaker performs the math. This function will work for any month (including December), and will handle leap years just fine.

 

Comments

HazMatt   HazMatt, Blaine, MN USA
Oct 20, 2012
I had trouble wrapping my brain around this and had to try this in a test database to see how it actually worked.

A supplied date of 12/15/2000 would evaluate to "13/0/2000", and FileMaker does the math, properly returning "12/31/2000".

Nice, simple function!
 

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